code: def test_join_continued_lines():
      assert list(_join_continued_lines(["a"])) == ["a"]
      assert list(_join_continued_lines(["a\\", "b"])) == ["ab"]
      assert list(_join_continued_lines(["a\\", "b\\", "c"])) == ["abc"]
      assert list(_join_continued_lines(["a\\", " b"])) == ["a b"]
      assert list(_join_continued_lines(["a\\", " b\\", " c"])) == [
          "a b c"
      ]
      assert list(_join_continued_lines(["a\\", "\\", "b"])) == ["ab"]
      assert list(_join_continued_lines(["a\\", "b", "c\\", "d"])) == [
          "ab",
          "cd",
      ]
      assert list(_join_continued_lines(["a\\", "", "b"])) == ["a", "b"]
      assert list(_join_continued_lines(["a\\"])) == ["a"]
      assert list(_join_continued_lines(["\\", "a"])) == ["a"]
  
imports: import importlib
  import os
  import sys
  from unittest import mock
  import importlib_metadata
  import pytest
  import mlflow
  import mlflow.utils.requirements_utils
  from mlflow.utils.environment import infer_pip_requirements
  from mlflow.utils.requirements_utils import _capture_imported_modules, _get_installed_version, _get_pinned_requirement, _infer_requirements, _is_comment, _is_empty, _is_requirements_file, _join_continued_lines, _normalize_package_name, _parse_requirements, _prune_packages, _PyPIPackageIndex, _strip_inline_comment, _strip_local_version_label
label_desc: Use image node_id 5 for calling a global function with example usage: test_join_continued_lines() without return types